Energy distributions from three-body decaying many-body resonances

Abstract

We compute energy distributions of three particles emerging from decaying many-body resonances. We reproduce the measured energy distributions from decays of two archetypal states chosen as the lowest $0^{+}$ and $1^{+}$-resonances in ${}^{12}$C populated in $\beta$-decays. These states are dominated by sequential, through the ${}^8$Be ground state, and direct decays, respectively. These decay mechanisms are reflected in the ``dynamic'' evolution from small, cluster or shell-model states, to large distances, where the coordinate or momentum space continuum wavefunctions are accurately computed.

arXiv comment4 pages, 4 figures. Accepted for publication in Physical Review Letters

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• Proton-Antiproton Annihilation and Meson Spectroscopy with the Crystal Barrel
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• Quantum Monte Carlo Calculations of Light Nuclei
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Cited by in corpus (15)

• alpha-alpha Scattering in Halo Effective Field Theory
• Astrophysical reaction rate for ${}^9$Be formation within a three-body approach
• Distinction between sequential and direct three-body decays
• Momentum distributions of $\alpha$-particles from decaying low-lying ${}^{12}$C-resonances
• Direct and sequential radiative three-body reaction rates at low temperatures
• Necessary conditions for accurate computations of three-body partial decay widths
• Three-body properties of low-lying ${}^{12}$Be resonances
• Complete kinematical study of the 3$\alpha$ breakup of the 16.11 MeV state in ${}^{12}$C
• Triple charged-particle decays of resonances illustrated by 12C-states
• Three-body decays: structure, decay mechanism and fragment properties
• Decay of low-lying 12C resonances within a 3alpha cluster model
• alpha particle momentum distributions from 12C decaying resonances
• Few-body decay and recombination in nuclear astrophysics
• Fusion and reactions of $\alpha$+${}^8$Be in the Hoyle resonance and associated resonances region
• 4-momentum conservation as the principal framework for mesonic decay: The case of helium-5-lambda